Bung for containers



Dec. 29, 1931.l

BY g ATTORNEY.

l. H. RIEKE BUNG FOR CONTAINERS Filed March 5, 1950 Patented Dec. 2,9,1931 f UNITED STATES PATENT OFFICE IRVIN H. RIEKE, 0F AUBURN, INDIANA,ASSIGNOR T0 RIEKE METAL PRODUCTS COR- PORATION, A CORPORATION OF INDIANABUNG FOR CONTAINERS Application led March 3,

This invention relates to improvements in bungs for containers, and theobject thereof is to afford means for closing the bung opening of acontainer, so constructed as to provide a normally closed secondaryopening into the container through the closing means, of smallerdiameter than the bung opening. Another object is to afford a bung for acontainer, provided with a threaded opening therein for the reception ofa faucet or pipe through whichthe contents of the container may beWithdrawn, and also to provide a plug for closing the opening in saidbung,

which plug is located in the bung so as not to obstruct a Wrench orother tool as it is applied to the bung to remove it from or insert itinto the bung opening of a container. And, a further object is toprovide a bung of great strength, light in weight, and inexpensive tomanufacture.

A preferred illustrative embodiment of the invention is shown 1n theaccompanying drawings, in which:-

Fig. 1 is a plan view of a bung embodying the invention;

Fig. 2 is a vertical section of the bung on the line 2--2 of Fig. 1 andincludes also the bung fixture of a container to which the bung isapplied; and

Fig. 3 is an elevation of the bung partly in section on the line 3--3 ofFig. 1.

rlhe illustrative embodiment of the invention comprises a cylindricalshell 1, preferably formed of sheet metal, and which has formed at oneend thereof an outwardly eX* tending radial flange 2, the outerperimeter of which is of polygonal shape and has a marginal rim 3 thatis upset to provide a reinforced wrench-head adaptable for theapplication of a wrench for turning the bung, (said Wrench not beingshown). The end of the shell 1, opposite the flange, has an integralportion of reduced diameter forming a sleeve 4 that is concentricallydisposed with respect to the outer portion 5 of the shell, and theintervening portion of the metal sheet of which the bung is formed iscontiguous with the upper part of the sleeve 4 and the lower cnd of theouter portion 5 of the shell, and is folded up into said outer 1930. seriai mi. 432,617.

portion to provide an annular seat 6 surrounding the top of the sleeveso that said sleeve and annular seat are set up into and encompassed bythe lower end of the large or outer portion of the shell.

The sleeve 4, the outer cylindrical portion 5 of the shell, the ange 2andrim 8, together with the part of the metal sheet that connects thesleeve and said outer portion, preferably are formed of a single pieceof metal pressed into the desired `shape by means of suitable dies (notshown) applied in the usual manner known in the art.

The exterior of the large cylindrical portion 5 of the shell isexternally threaded, and the sleeve 4 is internally threaded, so thatthe large portion 5 of the shell may be screwed into the bungring 7 of acontainer 8, and a plug 9 may be screwed into the sleeve 4.

Preferably, the plug 7 is made of sheet metal shaped to form acylindrical shell 10 which is closed at one end, and has at its oppositeend an outwardly extending radial flange 11, the outer perimeter ofwhich is polygonal in shape and hasl a marginal rim 12 that is upset soas to provide a reinforced square opening 14 in the plate is -made forithe reception of a key-wrench (not shown) by which the plug may beforcibly screwed into or withdrawn from the sleeve.

The rim 3 of the shell 1 is initially formed as indicated by the dottedline 18 in Fig. 3, and the thickness ot' the initially formed rim issubsequently increased, especially in those portions bet-Ween thecorners of the wrenchhead, by applying pressure endwise to the rini sothat it becomes upset and thereby strengthened. The rim 12 of the plug 9also is initially formed as indicated by the dotted line 19 and issubsequently upset and conipresscd around the edge of the plate 11, sothat the rim is thereby strengthened and the 55, and

. nary bung fixture.

plate permanently secured within the wrenchhead of the plug.

By means of this appliance accessmay be had to the interior of thecontainer through the sleeve of the bung by removal of the plug, or,through the bung opening by removal of the bung. The plug is soproportioned relative to the bung that the top of the plug, when theplug is in closed position, extends in a plane below that of thewrench-head of the bung, and the bung is so formed with respectto itslower end that the sleeve 4 and the plug when in closed tainedsubstantially within the large cylindrical portion 5 of the bung. Thebung and the plug thus formed and assembled constitute a compact closureapplicable to an ordi- Also, the plug when in closed position, beingcontained within the cylindrical shell of the bung below thewrench-headl thereof, permits unobstructed manipulation of a wrench aswhen applying it to the bung to eect the removal thereof fromthe bungfixture, or in applying the bung thereto.

laims:- i

1. A bung for a container comprising a hollow cylindrical shelll thathas at one end thereof a. radially disposed external flange ofypolygonal shape having an upturned outer perimeter to provide a. wrenchhead, the opposite end of said shell having a portion of reduceddiameter forming a sleeve concentrically disposed with'respect to theouter portion of the shell, the intervening part of the shell betweensaid outer portion and said sleeve being folded upl into said outerportion contiguous with the lower end of the outer portion and top ofsaid sleeve to form an elevated gasket seat spaced downwardly from saidwrench head, said outer portion bei ing externally threaded, and saidsleeve being internally threaded, anda plug fitted in the sleeve toclose the opening therein.

2. A bung for a container comprising an externally threaded shell havinga wrench head formed at one end thereof and an internally threadedsleeve integrally connected with its opposite end by a portion of saidshell that is folded up into the corresponding end of the shell toprovide an elevated gasket seat in the shell around the top of saidsleeve, and a plug removably secured in said sleeve for closing theopening therethrough, said sleeve plug being disposed within said shellin a plane below that of said wrench head.

3. A bung for a container consisting of a sheet metal stamping formedinto a cylindrical shell shaped and externally threaded to fit in thebung fixture of a container, and provided with a wrench head at one endand an integrally connected internally threaded sleeve at its oppositeend, which sleeve is set updinto and is encompassed by said opposite enposition, are con# 4. A bung for a container formed of sheet `metalhavingl a threaded cylindrical portion

